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<div class="header">
  <div class="headertitle"><div class="title">SkiaBitmap.cs</div></div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment">    VectSharp - A light library for C# vector graphics.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment">    Copyright (C) 2023 Giorgio Bianchini, University of Bristol</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"></span> </div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment">    This program is free software: you can redistribute it and/or modify</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment">    it under the terms of the GNU Lesser General Public License as published by</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment">    the Free Software Foundation, version 3.</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"></span> </div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment">    This program is distributed in the hope that it will be useful,</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment">    but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment">    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment">    GNU Lesser General Public License for more details.</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment"></span> </div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment">    You should have received a copy of the GNU Lesser General Public License</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment">    along with this program. If not, see &lt;https://www.gnu.org/licenses/&gt;.</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment">*/</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="keyword">using </span>Avalonia;</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="keyword">using </span>Avalonia.Media;</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="keyword">using </span>Avalonia.Media.Imaging;</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="keyword">using </span>SkiaSharp;</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="keyword">using </span>System;</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="keyword">using </span>System.Linq.Expressions;</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="keyword">using </span>System.Reflection;</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespace_vect_sharp_1_1_canvas.html">VectSharp.Canvas</a></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span>{</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span>    <span class="keyword">internal</span> <span class="keyword">class </span>SkiaBitmap : IImage, IDisposable</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span>    {</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span>        <span class="keyword">public</span> SKCanvas SKCanvas { <span class="keyword">get</span>; }</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span>        <span class="keyword">public</span> SKBitmap Bitmap { <span class="keyword">get</span>; }</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span>        <span class="keyword">public</span> RenderTargetBitmap AvaloniaBitmap { <span class="keyword">get</span>; <span class="keyword">set</span>; }</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span>        <span class="keyword">public</span> Avalonia.Size Size { <span class="keyword">get</span>; }</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span>        <span class="keyword">public</span> <span class="keywordtype">int</span> Width { <span class="keyword">get</span>; }</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span>        <span class="keyword">public</span> <span class="keywordtype">int</span> Height { <span class="keyword">get</span>; }</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span>        <span class="keyword">public</span> <span class="keywordtype">object</span> Lock { <span class="keyword">get</span>; }</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span> </div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span> </div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span>        <span class="keyword">static</span> Func&lt;RenderTargetBitmap, SKBitmap&gt; GetBitmap;</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span>        <span class="keyword">static</span> Func&lt;RenderTargetBitmap, object&gt; GetLock;</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span> </div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span>        <span class="keyword">static</span> SkiaBitmap()</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span>        {</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span>            ParameterExpression bitmapParameter = Expression.Parameter(typeof(RenderTargetBitmap));</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span> </div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span>            PropertyInfo platformImplProperty = typeof(RenderTargetBitmap).GetProperty(<span class="stringliteral">&quot;PlatformImpl&quot;</span>, BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.DeclaredOnly);</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span>            MemberExpression getPlatformImpl = Expression.Property(bitmapParameter, platformImplProperty);</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span>            MemberExpression getItem = Expression.Property(getPlatformImpl, <span class="stringliteral">&quot;Item&quot;</span>);</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span> </div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span>            Type renderTargetImpl = typeof(Avalonia.Skia.SkiaPlatform).Assembly.GetType(<span class="stringliteral">&quot;Avalonia.Skia.WriteableBitmapImpl&quot;</span>);</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span> </div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span>            MemberExpression getBitmap = Expression.Field(Expression.Convert(getItem, renderTargetImpl), <span class="stringliteral">&quot;_bitmap&quot;</span>);</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span>            MemberExpression getLock = Expression.Field(Expression.Convert(getItem, renderTargetImpl), <span class="stringliteral">&quot;_lock&quot;</span>);</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span> </div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>            GetBitmap = Expression.Lambda&lt;Func&lt;RenderTargetBitmap, SKBitmap&gt;&gt;(getBitmap, bitmapParameter).Compile();</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>            GetLock = Expression.Lambda&lt;Func&lt;RenderTargetBitmap, object&gt;&gt;(getLock, bitmapParameter).Compile();</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>        }</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span>        <span class="keyword">public</span> SkiaBitmap(<span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height)</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>        {</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>            this.AvaloniaBitmap = <span class="keyword">new</span> RenderTargetBitmap(<span class="keyword">new</span> PixelSize(width, height), <span class="keyword">new</span> Vector(96, 96));</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>            this.Lock = GetLock(this.AvaloniaBitmap);</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span>            this.Bitmap = GetBitmap(this.AvaloniaBitmap);</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span> </div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>            this.SKCanvas = <span class="keyword">new</span> SKCanvas(this.Bitmap);</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>            this.Size = <span class="keyword">new</span> Avalonia.Size(width, height);</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>            this.Width = width;</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span>            this.Height = height;</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span>        }</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span> </div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>        <span class="keyword">private</span> <span class="keywordtype">bool</span> disposedValue;</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span> </div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>        <span class="keyword">public</span> <span class="keywordtype">void</span> Draw(DrawingContext context, Rect sourceRect, Rect destRect)</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>        {</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>            context.DrawImage(this.AvaloniaBitmap, sourceRect, destRect);</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>        }</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span> </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>        <span class="keyword">protected</span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> Dispose(<span class="keywordtype">bool</span> disposing)</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span>        {</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>            <span class="keywordflow">if</span> (!disposedValue)</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>            {</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>                <span class="keywordflow">if</span> (disposing)</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>                {</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>                    this.SKCanvas?.Dispose();</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span>                    this.AvaloniaBitmap?.Dispose();</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span>                }</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span>                disposedValue = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span>            }</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span>        }</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span> </div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span>        <span class="keyword">public</span> <span class="keywordtype">void</span> Dispose()</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span>        {</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span>            Dispose(disposing: <span class="keyword">true</span>);</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>            GC.SuppressFinalize(<span class="keyword">this</span>);</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span>        }</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span> </div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>        <span class="keyword">public</span> <span class="keywordtype">void</span> Indispose()</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>        {</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span>            <span class="keywordflow">if</span> (!disposedValue)</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>            {</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span>                this.SKCanvas?.Dispose();</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span>                this.disposedValue = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span>            }</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span>        }</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span>    }</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span>}</div>
<div class="ttc" id="anamespace_vect_sharp_1_1_canvas_html"><div class="ttname"><a href="namespace_vect_sharp_1_1_canvas.html">VectSharp.Canvas</a></div><div class="ttdef"><b>Definition:</b> <a href="_animated_canvas_8cs_source.html#l00023">AnimatedCanvas.cs:24</a></div></div>
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